1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
|
/*
* Copyright (C) 2010 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package android.content;
import android.accounts.Account;
import android.content.pm.RegisteredServicesCache.ServiceInfo;
import android.os.SystemClock;
import android.os.UserHandle;
import android.text.format.DateUtils;
import android.util.Log;
import android.util.Pair;
import com.google.android.collect.Maps;
import java.util.ArrayList;
import java.util.Collection;
import java.util.HashMap;
import java.util.Iterator;
import java.util.Map;
/**
* Queue of pending sync operations. Not inherently thread safe, external
* callers are responsible for locking.
*
* @hide
*/
public class SyncQueue {
private static final String TAG = "SyncManager";
private final SyncStorageEngine mSyncStorageEngine;
private final SyncAdaptersCache mSyncAdapters;
// A Map of SyncOperations operationKey -> SyncOperation that is designed for
// quick lookup of an enqueued SyncOperation.
private final HashMap<String, SyncOperation> mOperationsMap = Maps.newHashMap();
public SyncQueue(SyncStorageEngine syncStorageEngine, final SyncAdaptersCache syncAdapters) {
mSyncStorageEngine = syncStorageEngine;
mSyncAdapters = syncAdapters;
}
public void addPendingOperations(int userId) {
for (SyncStorageEngine.PendingOperation op : mSyncStorageEngine.getPendingOperations()) {
if (op.userId != userId) continue;
final Pair<Long, Long> backoff = mSyncStorageEngine.getBackoff(
op.account, op.userId, op.authority);
final ServiceInfo<SyncAdapterType> syncAdapterInfo = mSyncAdapters.getServiceInfo(
SyncAdapterType.newKey(op.authority, op.account.type), op.userId);
if (syncAdapterInfo == null) {
Log.w(TAG, "Missing sync adapter info for authority " + op.authority + ", userId "
+ op.userId);
continue;
}
SyncOperation syncOperation = new SyncOperation(
op.account, op.userId, op.syncSource, op.authority, op.extras, 0 /* delay */,
backoff != null ? backoff.first : 0,
mSyncStorageEngine.getDelayUntilTime(op.account, op.userId, op.authority),
syncAdapterInfo.type.allowParallelSyncs());
syncOperation.expedited = op.expedited;
syncOperation.pendingOperation = op;
add(syncOperation, op);
}
}
public boolean add(SyncOperation operation) {
return add(operation, null /* this is not coming from the database */);
}
private boolean add(SyncOperation operation,
SyncStorageEngine.PendingOperation pop) {
// - if an operation with the same key exists and this one should run earlier,
// update the earliestRunTime of the existing to the new time
// - if an operation with the same key exists and if this one should run
// later, ignore it
// - if no operation exists then add the new one
final String operationKey = operation.key;
final SyncOperation existingOperation = mOperationsMap.get(operationKey);
if (existingOperation != null) {
boolean changed = false;
if (existingOperation.expedited == operation.expedited) {
final long newRunTime =
Math.min(existingOperation.earliestRunTime, operation.earliestRunTime);
if (existingOperation.earliestRunTime != newRunTime) {
existingOperation.earliestRunTime = newRunTime;
changed = true;
}
} else {
if (operation.expedited) {
existingOperation.expedited = true;
changed = true;
}
}
return changed;
}
operation.pendingOperation = pop;
if (operation.pendingOperation == null) {
pop = new SyncStorageEngine.PendingOperation(
operation.account, operation.userId, operation.syncSource,
operation.authority, operation.extras, operation.expedited);
pop = mSyncStorageEngine.insertIntoPending(pop);
if (pop == null) {
throw new IllegalStateException("error adding pending sync operation "
+ operation);
}
operation.pendingOperation = pop;
}
mOperationsMap.put(operationKey, operation);
return true;
}
public void removeUser(int userId) {
ArrayList<SyncOperation> opsToRemove = new ArrayList<SyncOperation>();
for (SyncOperation op : mOperationsMap.values()) {
if (op.userId == userId) {
opsToRemove.add(op);
}
}
for (SyncOperation op : opsToRemove) {
remove(op);
}
}
/**
* Remove the specified operation if it is in the queue.
* @param operation the operation to remove
*/
public void remove(SyncOperation operation) {
SyncOperation operationToRemove = mOperationsMap.remove(operation.key);
if (operationToRemove == null) {
return;
}
if (!mSyncStorageEngine.deleteFromPending(operationToRemove.pendingOperation)) {
final String errorMessage = "unable to find pending row for " + operationToRemove;
Log.e(TAG, errorMessage, new IllegalStateException(errorMessage));
}
}
public void onBackoffChanged(Account account, int userId, String providerName, long backoff) {
// for each op that matches the account and provider update its
// backoff and effectiveStartTime
for (SyncOperation op : mOperationsMap.values()) {
if (op.account.equals(account) && op.authority.equals(providerName)
&& op.userId == userId) {
op.backoff = backoff;
op.updateEffectiveRunTime();
}
}
}
public void onDelayUntilTimeChanged(Account account, String providerName, long delayUntil) {
// for each op that matches the account and provider update its
// delayUntilTime and effectiveStartTime
for (SyncOperation op : mOperationsMap.values()) {
if (op.account.equals(account) && op.authority.equals(providerName)) {
op.delayUntil = delayUntil;
op.updateEffectiveRunTime();
}
}
}
public void remove(Account account, int userId, String authority) {
Iterator<Map.Entry<String, SyncOperation>> entries = mOperationsMap.entrySet().iterator();
while (entries.hasNext()) {
Map.Entry<String, SyncOperation> entry = entries.next();
SyncOperation syncOperation = entry.getValue();
if (account != null && !syncOperation.account.equals(account)) {
continue;
}
if (authority != null && !syncOperation.authority.equals(authority)) {
continue;
}
if (userId != syncOperation.userId) {
continue;
}
entries.remove();
if (!mSyncStorageEngine.deleteFromPending(syncOperation.pendingOperation)) {
final String errorMessage = "unable to find pending row for " + syncOperation;
Log.e(TAG, errorMessage, new IllegalStateException(errorMessage));
}
}
}
public Collection<SyncOperation> getOperations() {
return mOperationsMap.values();
}
public void dump(StringBuilder sb) {
final long now = SystemClock.elapsedRealtime();
sb.append("SyncQueue: ").append(mOperationsMap.size()).append(" operation(s)\n");
for (SyncOperation operation : mOperationsMap.values()) {
sb.append(" ");
if (operation.effectiveRunTime <= now) {
sb.append("READY");
} else {
sb.append(DateUtils.formatElapsedTime((operation.effectiveRunTime - now) / 1000));
}
sb.append(" - ");
sb.append(operation.dump(false)).append("\n");
}
}
}
|
